The Columbia Series 770 vinyl window is an affordable fully welded vinyl window system designed with both the home-builder and the home owner in mind.

The Columbia Series 770 vinyl window is a traditional configuration providing two operating sashes with weight-regulated balances. This assures smooth operation and enhanced ventilation, and allows for easy and safe outside-glass cleaning from inside the home. Available in Standard and Oriel formats Mutins, where chosen, are mounted within nominal 7/8″ insulated glass to facilitate glass cleaning.

The Columbia Series 770 vinyl window is a high quality affordable choice for new construction or replacement windows.

Specifications:Scope: Furnish and install all vinyl windows of the type and size shown on the drawings and called for in the specification including all necessary hardware, anchors, and trim where noted.

Construction: All masterframe and sash members shall be miter-cut and fusion-welded. Double-hung sash units shall be the tilt-type. The window shall incorporate fin-type weatherstripping inserted into designed grooves and have continuous contact with frame members when in a closed position.

Hardware: The operating sash shall have an interlocking rail to provide engagement with each other when fully closed. A meeting rail cam lock and keeper will be provided to lock the window in a closed position. Double hung operating sash shall be equipped with counterbalancing mechanisms to hold the sash stationary in any open position meeting AAMA 902.2. Balances shall be equipped with brass wheels and stainless steel axles contained in a nylon housing. They shall be field-adjustable and easily replaced with use of normal hand tools.

Finish:All window members shall have an integral white color throughout the profile. (An option of Almond color is also available) Insect screens: All operating vents shall be designed to receive screens. Screen frames to be extruded aluminum with baked enamel color to be compatible with PVC frames. 18″x16″ fiberglass cloth meeting ASTM D3656 shall be secured to the frame using a vinyl spline. Screens shall be retained by the integral beveled tubular PVC screen track.

Insect screensare not for the purpose of providing security or providing for retention of objects or persons from the interior.

Erection and Caulking (by others): All units shall be adequately and securely fastened plumb, level and square without distortion, twisting, bowing or springing of frame members. All frame members shall be properly supported, shimmed, and leveled along their entire length. All units shall be properly caulked using a good grade of non-hardening caulking that is compatible with PVC and the surface it is mounted on to provide a thoroughly water-tight seal meeting AAMA 808.3. The masterframe is to be installed square with the operating sash. The sash should be operated and the masterframe should be given any necessary final adjustment to insure proper operation and weather-tightness.